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Rough idle And missing out while driving

(1999 Ford Expedition)
in Blanco, TX on June 26, 2010
rough idle missing out,stumbling ,hesitating while driving
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Popular Answer
on June 26, 2010
plugs and coils are a good start. labor intensive if you have rear heat

Roy
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on February 26, 2016
I CHANGE THE PVC VALVE AND ITS STILL RUNNING ROUGH HIGH RPMS BEFORE CHANGING GEARS WHAT COULD BE THE PROBLEM
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on May 18, 2016
Could possibly be your IAC (Idle Air Control Valve). On the 5.4L it is located under the fire wall. On the 4.6L the IAC is located driver side rear portion of the throttle body. Hope this helps
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